270" Middle Spring ID: N/A Damper: No Inner Spring ID: 0
This cross over pipe is supplied in two pieces with the middle slip joint that is designed to be welded in the correct length position once fitted to vehicle
Hex Head S/Sfits FE Ford 390-428
12-Point Head Black Oxide7/16" UNC x 2
allowing for perfect placement of the pickup and ensuring superior performance
Performer Intake Manifold ED21213 ORB Adapters 270" Middle Spring ID: N/APerformer Intake ManifoldFord 289 302W, Idle 5500 rpm, Dual Plane, non EGR, Black finish ED21213 21213 Performer manifolds are dual plane, low rise intake manifolds with a 180 firing order and patented runner design that you won't find in other brands. This patented design greatly improves torque over a wide rpm range for excellent throttle response, especially off idle through the mid range. Performers are ideal for passenger cars, trucks, 4x4s, tow